Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers

被引：41

作者：

Roh, Kwangdong ^{[1
]}

Dang, Cuong ^{[2
]}

Lee, Joonhee ^{[3
]}

Chen, Songtao ^{[3
]}

Steckel, Jonathan S. ^{[4
]}

Coe-Sullivan, Seth ^{[4
]}

Nurmikko, Arto ^{[1
,3
]}

机构：

[1] Brown Univ, Dept Phys, Providence, RI 02906 USA

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, LUMINOUS Ctr Excellence Semicond Lighting & Displ, Singapore 639798, Singapore

[3] Brown Univ, Sch Engn, Providence, RI 02906 USA

[4] QD Vis Inc, Lexington, MA 02421 USA

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 15期

基金：

美国国家科学基金会;

关键词：

GAIN;

D O I：

10.1364/OE.22.018800

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate surface emitting distributed feedback (DFB) lasers across the red, green, and blue from densely packed colloidal quantum dot (CQD) films. The solid CQD films were deposited on periodic grating patterns to enable 2nd-order DFB lasing action at mere 120, 280, and 330 J/cm(2) of optical pumping energy densities for red, green, and blue DFB lasers, respectively. The lasers operated in single mode operation with less than 1 nm of full-width-half-maximum. We measured far-field patterns showing high degree of spatial beam coherence. Specifically, by taking advantage of single exciton optical gain regime from our engineered CQDs, we can significantly suppress the Auger recombination to reduce lasing threshold and achieve quasi-steady state, optically pumped operation. (C) 2014 Optical Society of America

引用

页码：18800 / 18806

页数：7

共 24 条

[1] MULTIDIMENSIONAL QUANTUM WELL LASER AND TEMPERATURE-DEPENDENCE OF ITS THRESHOLD CURRENT [J].